Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 160,438	$ 165,402	$ 524,076	$ 467,097
Cost of products sold	106,301	107,109	337,328	314,147
GROSS PROFIT	54,137	58,293	186,748	152,950
Costs and expenses
Selling	12,732	11,245	38,133	33,573
General and administrative	17,794	17,467	54,624	50,724
Goodwill impairment	0	6,529	0	6,529
Research and engineering	5,840	4,741	16,793	14,878
Other operating (income) expense, net	(2,307)	937	(10)	2,472
Total costs and expenses	34,059	40,919	109,540	108,176
OPERATING INCOME	20,078	17,374	77,208	44,774
Other (expense) income
Interest income	478	143	1,201	359
Interest expense	(998)	(819)	(3,198)	(2,129)
Other income, net	18	898	165	6,497
Total other income (expense)	(502)	222	(1,832)	4,727
INCOME BEFORE INCOME TAXES	19,576	17,596	75,376	49,501
Income tax expense	4,431	5,707	18,348	11,590
NET INCOME	15,145	11,889	57,028	37,911
Net income attributable to noncontrolling interests	(15)	(2)	(28)	(27)
NET INCOME ATTRIBUTABLE TO PREFORMED LINE PRODUCTS COMPANY SHAREHOLDERS	$ 15,130	$ 11,887	$ 57,000	$ 37,884
AVERAGE NUMBER OF SHARES OF COMMON STOCK OUTSTANDING:
Basic	4,906	4,937	4,929	4,935
Diluted	4,990	5,036	5,006	4,983
EARNINGS PER SHARE OF COMMON STOCK ATTRIBUTABLE TO PREFORMED LINE PRODUCTS COMPANY SHAREHOLDERS:
Basic	$ 3.08	$ 2.41	$ 11.56	$ 7.68
Diluted	$ 3.03	$ 2.36	$ 11.39	$ 7.6

The total amount of expenses directly related to research and engineering of products.

No definition available.

Name:	plpc_ResearchAndEngineeringExpense
Namespace Prefix:	plpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.